PHPickerViewControllerを使って画像を選択する
PHPickerViewController を使って画像を選択する方法です。 UIImagePickerController が将来的に非推奨になり PHPickerViewController に置き換わっていくみたいです。
参考: Meet the new Photos picker
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| import UIKit | |
| import PhotosUI | |
| class ViewController: UIViewController { | |
| let imageView = UIImageView() | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| view.backgroundColor = .white | |
| let button = UIButton() | |
| button.setTitle("Select Image", for: .normal) | |
| button.backgroundColor = .lightGray | |
| button.frame = CGRect(x: (view.bounds.width - 300) / 2, y: view.bounds.height - 100, width: 300, height: 60) | |
| button.addTarget(self, action: #selector(showPicker), for: .touchUpInside) | |
| view.addSubview(button) | |
| imageView.backgroundColor = .lightGray | |
| imageView.frame = CGRect(x: (view.bounds.width - 300) / 2, y: 200, width: 300, height: 300) | |
| view.addSubview(imageView) | |
| } | |
| @objc func showPicker() { | |
| var configuration = PHPickerConfiguration() | |
| configuration.filter = .images | |
| configuration.selectionLimit = 1 | |
| let picker = PHPickerViewController(configuration: configuration) | |
| picker.delegate = self | |
| present(picker, animated: true, completion: nil) | |
| } | |
| } | |
| extension ViewController: UINavigationControllerDelegate, PHPickerViewControllerDelegate { | |
| func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) { | |
| dismiss(animated: true, completion: nil) | |
| if let itemProvider = results.first?.itemProvider, itemProvider.canLoadObject(ofClass: UIImage.self) { | |
| itemProvider.loadObject(ofClass: UIImage.self) { [weak self] image, _ in | |
| guard let image = image as? UIImage else { | |
| return | |
| } | |
| DispatchQueue.main.async { | |
| self?.imageView.image = image | |
| } | |
| } | |
| } | |
| } | |
| } |